Clutch and brake mechanism.



",F. S. .ELLETT & C. E. FORSYTH.

CLUTGH AND BRAKE MBGHANISM.

APPLICATION FILED .TUNE 27. 1908.

923,254. Patented June 1,1909.

FIGZ L le [sa 2s lo 7 :y ww "'E l; L 4 I7 i 1V i v Ti s Il F IG.3 F|G.4I

Z5 E 6 6 f1/Iliff i o 23 23 WITNESSES: INVENTORS,

. ,aw/LLL Jaa/Lk .5j www( ',LierreandLArroNv -Fonsrrrncitizens formed in one piece with said sleeve.

"rspecificaltionuf g y, Y

Thlsinventionrelates to clutch'and brake ing this retarding ring :tends to wind up, and

-k'e vehlcles'` .oyc eequip'ped witlrthedevice 5 Fig. I2 'is a sidevie'w Wltlrtlie hubcut'away Figs; 3 andv race bearingQ for the driving-sprocket 10,'

forthatend of the hub.

13. The. sleeve is held against rotation by ypermits it to move longitudinally.

, ceives the shoulder 14 on the block 4.

longitudinally movable sleeve 13, besides afengaged by the actuator 19. The latter is Nirnn sfrairns rafrnnr formen,

ofthe ,United States, andjreside'nts ofV Elmira, thefcountyof Cheniung and State 4of NewgYorlr,Qhaveinventedfcertain new andy useful :improvements-ein'f Clutch and Brake: Mech'anlsn'is, fof Whichj .the following' a:

mephanisnigfwith articularreference to backV alingcoasterA l rakes for ve'loc1pedesv and y In"y the"drawingsf-figurefl lis a central, lon ltudinalsection of the rearhub of avv bi- 4,are botliisections on the -line 3-3' of Figl", showing,l respectively, the driving clutch inA it'sfop'era'tive 'and-in'operative positions; and@V 1n. the" drawings. -f

1 israllstationary axleadaptedto belockcd I Within they rearff'orks ofthe fbicycle", and isy repbresented as threaded at both ends' 2 and 31, Af lock 4is`screwed'upon the endz2, whichT affords a ball race 5`forvthe hub-6, and is held stationary bythe lug on thenut 7 "On the other end 'ofthe'axle a block 3". affords aball which in turnaffords aa'hagllrace bearing 11 The brake ring` or shell 12 is supported by .a nonrotative, longitudinally inovablesleeve a connection with the station ary block 4 that In the construction shown this is accomplished by a diametral shoulder 14 on the block 4 that enters a corresponding recess l15 in the end of this sleeve 13.

The brake ring 12 is also held against rotation, and in the construction shown this is .effected bya diametral slot 16 that also re- In the construction shown, the nonrotary,

fording a support for the brake ring 12, .is also the brake expander, for upon it is .formed the inwardly directed wedge 17 that enters the slot 1 8 in the brake ring. lltlis 1e sleeve 13 is extended' inwardly beyond the Wedge and toward theI sprocket end of the hb, in the forinof a ring13, to meet and be rREnEnIok-ps,'nLLnTTfANn CLAYr-oN'El'ronsr/Trr oF ELMInA, New YORK, AssIGN'oas Toi EcLIPsnMA-'CHINE comunic, or ELMIRA, NEWYORK;

.cL'rcHAnn BRAKE MEcHnNVIsM. 1. f

Patented June 1, 71909.

.notaryf uponthe axle, and entends in. bei-- tween the axle 'and 'ring-13?, besides having a flange-"20 that engages'saidl sleeve 13 to` shift the expandingwedg'e.

The "actuator 19 carries a' retarder l21`y that ysecures' i-elative rotary frnovement between said actuatorand thedriver, and which con` sists of a ,fle.\rible',` Asplit ring that is attached at one end'v to theactuatorg'and engages with its free end the-slee'vc"13.I vOn forward drive so causes littlefrifction, Whileon' back pedal- `ing it Fopenseut and oifers considerable resistanceto the rotation of the actuator.,

described, which vconstitute the brake nie/ch-vv fanis'm, can all be asseinblecltogether as a separate unit, and' togetherfplaced -within A`,the 'hubysince with the-1n itis possible touse a hub With a straightfunifoim bore,`assho`wn1 'lil'ie driving 'mechanism canlbe assembledas another "unit before itls'lnse'rted witlnn.-

be operated by the sprocket 10 comprises the 'p arts are fad apt ed vto thehb., and 'itis an iinportantfeature of the device that thedrivingsprocket extension 22'a`nd' a clutch carried' 4 by it for connecting the sprocket with the hub 6 for forward drlving-L l f Anfexpansible ring 23 'is lemployed for the drivin clutch that is expanded 'out against the hu by a block 24. The latter'lies upon theflsurface 25 of the'sprocket extension 22, below the opposing ends 25 of the ring 23,

and enters between the' said ends of the ring that are cut away to receive it.

The eXpansible ring shown consists of shoes that are held 'together by an elastic band28. As shown in the drawings, the surface 25 ex-V tends transversely across the part 22, and the surface of the ybar, that engages the eXpansible ring is cylindrical in form, thus adapt-- ing the clutch for operation on reverse, as Well as forward rotation of the sprocket, although the reverse operation is not made use of in its combination With a back pedaling brake. This is a clutch that releases and en'- gages at once and. cannot stick.

A The clutch shoes 23 and block '24 arelocked to the sprocket extension 22 by flanges 27 at the outer end of the shoes, that enter corresponding recesses inthe sprocket eX- tension in connection with the elastic band 23, that norm lly holds the shoes down upon the sprocket e/ tension 22,. rl`hus the clutch shoes form a cage for the bar 24. Again, the clutch shoes/f3 are extended out beyond the inner end of the sprocket extension 22, so that `when the driving mechanism is removed from the hub as one piece, and it is desired to remove either the clutch block 24, or" the clutch shoes 23, it can be done readily by pinching the ends of the shoes that overhang the sprocket extension as aforesaid, till they tilt upon said sprocket extension and the ange 27 comes up out of its recess.I Vfhen the driving elements are assembled with the braking elements, the shoes 23 overhang the end 13a of the brake supportin sleeve 16.

The means upon the driving lock 22' that shift the actuator inwardly u n the wedgecarrying sleeve 13 'onsist cam .faces 28, like ratchet teeth, t at coperate with corresponding cam faces Q9 on the outer en d of the actuator 19. On forward driving theratchet teeth on these two. arts mesh and the actua? tor recedes from t e wedge-carrying sleeve and revolves with the-driver, but on back pedaling the actuator is put into o eration y shifting it inwardly against said s eeve.

What we claim isz- 1. The combination with a rotary driven hub, of a driving member, having'an extension 22 that enters .the.hu b, and has a recess that -affords a bearing surface25; an expansible, split clutch ring between said extension and said hub; and an expanding block within'said recess adapted to beorced out upon said expansible clutch ring by. said surface25 {substantially as shown and described.

2. The combination with a rotary driven hub, of a driving member, having an extension 22 that enters the hub, and has a recess that affords a bearing surface 25 that eX- tends on both sides of a plane that isvertical to said surface and extends through the axis of rotation of the driver; an expansible, split, clutch-ring between said extension and said hub; and a cylindrical. handing block 24- gagement therewith, and are yieldingly clamped thereto; substantially as shown and described.

4. The combination with' a rotary driven hub, of a driving member, having an extension 22 that enters the' "hub, and has a recess; an expanding block within the recess; and-a removable cage for said block, consisting of the clutch shoes 23, that projectin beyond said extension, are held against longitudinal movement thereon, by 4a projection on one i part that ent-ers a recess in the other, at a dis tance from the projecting ends of said shoes,

and are yielding y clamped to said extension; substantially as shownand described.

5. In a back pedaling coasterv brake device, the combination with a rotary hub, of a driver; a brake anchor at one end o f the hub held against rotation by attachment to the vehicle frame; an ex ansible split brake ring,

-nonrevolubly attac ed to .said anchor; a

sleeve within the brake to support the latter, said sleeve being nonrevolu y attached to said anchor, having a raised Wedge formed on its surface, -and adapted to move longitudinally with reference to said brake ring to expand-it; and means operated by the driver on back edaling whereby the sleeve is moved longitudinally and its wedge meansmade to expand said brake ring; substantially .as shown and described. .y

FREDERICK. s. ELLETT. CLAYTON n'ronsr'ri r.

lvitnesses: I I

D. L. WHITTIER, L. S. WHITTIER. 

